In Pixar's Cars 2, Porto Corsa is the setting for the World Grand Prix's second race.
The fictional Italian coastal city follows the opening race in Tokyo and comes before the final event in London. Its harbor, cliffs, tunnels, and narrow streets give the World Grand Prix a setting unlike the conventional oval tracks associated with American stock-car racing.
Porto Corsa is designed as an Italian-inspired location, and the race includes cars from several countries. The international route is central to Cars 2 because it provides the backdrop for both the competition and the spy plot involving the new fuel Allinol.
Tokyo is the first race location, while London hosts the third and final race. Confusing the order is easy because the film moves quickly between sightseeing, racing, and Mater's investigation.